Reverse an Array In-Place

Code

#include <stdio.h>

void swap(int *a, int *b)
{
   int temp = *a;
    *a = *b;
    *b = temp;
}
void reverse_array(int arr[], int n) {
    
    int left, right;
    left = 0; right = n-1;

    while(left < right) 
    {
        swap(&arr[left], &arr[right]);
        left++;
        right--;
    }
}

int main() {
    int n;
    scanf("%d", &n);

    int arr[100];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    reverse_array(arr, n);

    for (int i = 0; i < n; i++) {
        printf("%d", arr[i]);
        if(i < n-1){
        	printf(" ");
        }
    }
    return 0;
}

Solving Approach